Veneer-cutting machine.



L A. SINCLAIR.

VENEER CUTTING MACHINE.

APPLICATION FIL'ED SEPT- 18,- 1914.

Patented Dec. 19, 1916.

A. SINCLAIR. VENEER CUTTING MACHINE. APPLICATION FILED SEPT-1B. 1914.

1,209,052; {Patented Dec. 19,1916.

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.' APPLICATION FILED SEPT. 18. I914.

1,209,052. Patented Dec. 19,1916.

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J. A. SINCLAIR.

VENEER CUTTING MACHINE.

APPLICATION FILED SEPT. 18. WM.

1 09,052. Patented Dec. 19, 1916.

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- 1. A SINCLAIR. VENEER CUTTING MACHINE.

APPLICATION F ILED SEPT- 18 191 4.

Patented Dec. 19, 1916.

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VENEER-CUTTING MACHINE.

Specification of Letters'Patent.

Patented Dec. 19, 1916.

Application filed September 18, 1914. Serial No. 862,363.

To all whom it may concern":

Be it known that I, JAMES A. SINCLAIR, citizen of the United States, residing at Metairie Ridge, in the parish of Jefferson and State of Louisiana, have invented certain new and useful Improvements in Veneer-Cutting Machines, of which thefollowing is a specification This invention relates to an improvement in veneer-cutting machines, and the object is to provide means for causing the knife to travel at an angle for cutting the veneer from the log or block in the shape of an arc of a circle.

The invention relates to still other novel features of construction and combinations of parts which will be hereinafter more fully described and pointed out in the claims.

In the accompanying drawings: Figure 1 isa plan view; Fig. 2 is a detail plan view showing the knife in position; Fig. 3 is a longitudinal vertical sectional-view showing the connection of guide blockand knife holder; Fig. 4 is a view in end elevation; and Fig. 5 is a detail sectional view of the adjustable connection at end of radius bar. Fig. 6 is a detail view in top plan showing the bolt to be cut and indicating by dotted lines some of the cuts. i

A represents the frame of the machine, upon which is mounted the drive shaft 1. A pulley 2 is mounted on the drive shaft 1, through which motion is transmitted to the shaft. A head shaft B is mounted upon the frame, and is capable of being slid lengthwise through its bearings by such means as the lever 3, to adjust it to varyinglengths of bolts or logs. v

Mounted upon the shaft B is the dog head C with a center point and jaws for dogging the bolts. A large gear wheel 4 is mounted and keyed to the shaft B, and is adapted to receive its motion from the pinion 5 on the shaft 1. An auxiliary shaft F is mounted upon the frame, and loosely mounted upo theshaft is a sprocket wheel6.

The sprocketwheel7, keyed'tothe shaft B, has a chain 8 passing thereover, and over the sprocket wheel 6, .so that when the sliding clutch G is brought into mesh with the sprocket wheel, the shaft. F will be caused to rotate. Mounted upon the frame and located opposite the doghead C is a tail shaft 9, having a. tail center 10. connected thereto for engaging an end of the bolt or log. A screw shaft 11is mounted on the frame and located at right angles to the tail shaft 9. A pinion 12 is mounted upon an end of the shaft, and meshes with a pinion 13 on the shaft F,.whereby the shaft 11. may be. rotated. A guide block 1 1 is mounted in a guide member K, which prevents the block from rotating, but is provided with an elongated slot 15, through which a pin 16 on the block extends. The block is capable of movement longitudinally of the member K, and is caused to move by the screw shaft 11. A lmife holder 17 is pivotally mounted upon the pin 16 at one corner thereof, so that the knife holder is eccentrically mounted. The lmife holder is provided with a vertical slot, which is slightly inclined for the reception of a knife 18, so that the knife can be brought into engagement with the surface of a boltor log for removing a veneer therefrom. A horizontal' perforation is formed .in the knife holder 17, which extends longitudinally thereof, and received in the, perforation is an end of a radius bar 19. ,The radius bar is connected to a block 21 by means of a bolt 22. The block 21 is provided with an elongatedslot 23, and the head of the bolt 22 is received: in the block 21 beneath the elongated slot, sothat it engages the block, the bolt passing through the slot 23 and through the radius bar'19, and the nut 24 is screwed upon the bolt for fastening the radius bar to the block.

7 Upon the-rotation of the shaft 1, power will be transmitted to the shafts B and F. The rotation of the shaft B will-cause the bolt or log to be turned and when the clutch G .is thrown into mesh with the sprocket wheel 6, the shaft F will be caused to rotate,

thereby transmitting motionv to the screw shaft 11. The rotation'of the shaft 11 causes the blockleto be :l'IlOVed longitudinally thereof. This movement of-the block-causes the knife, which has been set at the proper angle, to receive a progressive steady feed intothe bolt or log, cutting off a continuous sheet of veneer thickerv on the one edge than on the other.

In Fig. 6 the lines a, 5, 0, 03 indicate the full sized bolt after the knife has removed the outside, and e, f, g, 71. would ordinarily be the size of. the bucket desired. If. the bolt wasjust twice the diameter of e, f, g, h, asindicated at z, j, the angle of thel znife 'for two bucket shells.

is three times that of the surface indicated at e, g, the angle of knife 18 to the center line of log is three times as great as that of 6- 9, and one revolution of bolt gives three complete shells. This will illustrate what is possible in producing buckets from strips of veneer, but I do not wish tobe lim ited to any particular size of bucket to be cut from a given log or bolt.

The knife and radius bar are set or regulated in accordance with the center line m r which passes through the dogging head and tail shaft. The knife 18 always points to this line. The angle from the point a to the outer extremity of the blade is governed .entirely by the adjustment of the bolt 22 by passing the bolt through one'of the holes of the radius bar. .The radius bar 19 is stati onary in the knife holder 17, but the length of radius is fixed from the pin 16 by the bolt 22. The knife is maintained in the plane of the bolt or log by the pin 16. The guide member K isnot set at an exactright angle to the center line :01 ,as more. clearly shown on a somewhat enlarged scale in Fig. 6, but the outerend is turned toward the bolt or log, so that the end of knife next to guide member K is always traveling toward the log or bolt in ,a plane practically at right angles to the center line my. That is to say the-turning of the knife 18 around pin 16 would cause any given point'in the edge of the knife to vary from the straight line of movement of pin 16 on the screw 11 by the amount of the sagitta of the arc of its movement around pin 16, but the slant of the screw from a true perpendicular to the center line 00-y will compensate for the. sagitta equaling movement and cause such given point of the knife to travel at right angles to the axis The pin or bolt 22 in radius bar 19 moves in the guide block 21 during the movement of the knife, so that the radius is kept constant. The slot in the block 21 is parallel to the center line mg and the center line of this slot is set as far back of the center line as center of radius bar is back of the cutting edge of the knife 18. I 7

To change the angle 'of the blade or knife 18 to give any taper desired to the external surface of the strip to be formed into a bucket, the bolt-'22 is either moved inward or outward by inserting the bolt through the the knife or blade is held at an angle or bevel according to the cut'desired, and as the knife is fed to the log or bolt for producing the cut, one longitudinal edge of the strip removed from the log or bolt will be of greater thickness than the other longitudinal edge, but a taper will be produced from the thicker edge to the thinner edge. These strips are intended to be used more particularly in the construction of buckets, and by cutting the veneer from the log in such a manner, the veneer will be capable of being rolled into a conical form, and will assume such form when'the ends of the strip are brought together.

After the stripofveneer has been removed from thebolt or log, the clutch G is disconnected from the sprocket wheel 6, and is thrown into engagement with the pulley H, which is mounted on the shaft F, whereby the shaft F will be caused to rotate in a contrary or reversedirection for the purpose of reversing the direction of rotation of the shaft 11. The rotation of the shaftrll in a reverse direction will feed the block 1a in an opposite direction, causing the knife holder to be returned to its normal position for the next cutting operation.

I claim:

1. A veneer cutting machine comprising a knife, means for supporting and moving the bolt past the knife, means'for mounting the knife to feed toward the work transversely to the travel of the work and to give it gradually varying inclination to the work consisting of a radius bar, a pivot therefor, and means for maintaining such pivot in a fixed plane longitudinally of the work at right angles to the plane of swing of the radius bar, the distance of such pivot from the cutting length of the knife being such as to allow the complete feeding into the work desired for the knife without varying the angle of the knife more than is desired. 2. A veneer cutting machine, comprising a knife, a means for supporting and moving the work past the knife, a pivot at one end of the knife beyond one end of the work movable in a straight line toward the work to feed the knife into the work, and a radius bar or extension from the knife on the other side of the pivot from the work, and pivotal means engaging the bar or extension to cause the same to swing on the pivot of the knife to varying degrees of inclination to the work upon the movement of the pivot of the knife toward the work.

3. In a veneer cutting machine, the combination with means for supporting and moving a log or bolt, of aknife, means for feeding the knife toward the bolt, a radius bar connected to'the knife and mounted to swing in a plane at right angles to the movement of the bolt, a slotted block, means connecting the bar t the block and having sliding movement in the slot upon the movement of the bar for regulating the angular movement of the knife.

l. A veneer cutting machine comprising a I knife, means for supporting and moving the bolt past the knife, means for mounting the knife to feed toward the work transversely to the travel of the work and to give it gradually varying inclination to the work consisting of a radius bar, a pivot therefor, and means for adjusting the position of said radius bar pivot for changing the angle of the knife.

5. In a veneer cutting machine, the combination with means for supporting and moving a log or bolt, of a knife, means for feeding the knife toward the bolt, and set copies of this patent may be obtained for five cents each, by addressing the Commissioner Washington, D. C. V

at an angle from a true perpendicular to angles to the center line of the bolt, a radius bar connected to the knife and mounted to swing in a plane at right angles to the movement of the bolt, and means connected to the radius bar to allow the knife to feed into the work without varying the angle of the knife more than is desired.

In testimony whereof I aflix my signature, in the presence of two witnesses.

JAMES ALFRED SINCLAIR.

of Patents, 

